<form method="post" enctype="multipart/form-data" class="frm" style="width:850px; margin:10px 10px;" action="banner/upload_file.php">
    <h1> THÊM BANNER MỚI </h1>
    <p> <span style="margin-right:15px;"> Hình ảnh </span> <input type="file" name="file" id="file"> </p>
    <p> <span> Link </span> <input type="text" name="url" id="url" style="width:300px;"> </p>
    
    <p style="marin:20px 0px; text-align:center;"> 
        <input type="submit" value="Thêm" class="button">
    </p>
</form>